19408880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^2$

素因数の和:258

約数の個数: 60

約数和(自身を含む): 47924760

約数和(自身を除く): 28515880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 113, 152, 190, 226, 304, 380, 452, 565, 760, 904, 1130, 1520, 1808, 2147, 2260, 4294, 4520, 8588, 9040, 10735, 12769, 17176, 21470, 25538, 34352, 42940, 51076, 63845, 85880, 102152, 127690, 171760, 204304, 242611, 255380, 485222, 510760, 970444, 1021520, 1213055, 1940888, 2426110, 3881776, 4852220, 9704440, 19408880]

約数ペア:

[(1, 19408880), (2, 9704440), (4, 4852220), (5, 3881776), (8, 2426110), (10, 1940888), (16, 1213055), (19, 1021520), (20, 970444), (38, 510760), (40, 485222), (76, 255380), (80, 242611), (95, 204304), (113, 171760), (152, 127690), (190, 102152), (226, 85880), (304, 63845), (380, 51076), (452, 42940), (565, 34352), (760, 25538), (904, 21470), (1130, 17176), (1520, 12769), (1808, 10735), (2147, 9040), (2260, 8588), (4294, 4520)]